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P. T. ELTING.

Bran Duster.

2 Sheets-Sheet I. y

No. 77,965. Patented May 1Q, 1868.

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Patented. May 19, 1868.

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PETER T. .ELTINQl Or BUFFALO, NEW YORK, AssiCNORl TO uIrIING BOLT `AND Boeren COMPANY, or CINCINNATI, OHIO. i

Letters Patent No. 77,965, elated liag 19, 1868.

I IMPROVED BEAN-DUSTER.

TO ALL wHOM 1T MAY CONCERN:

Beit known that I, PETER T. ELTING, of the city of Buffalo, county of Erie, and-State of New York, assignor to the Elting Bolt and Duster Oompany,of`thc city of Cincinnati, and State of Ohio, incorporated Vunder the laws of the State of Ohio, have inventedl new and usefulrlmprovements in` Brau-Busters; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making a part of this" specification, in whichi Figure I is a vertical section; i i Figure II is a sectional elevation at right angles to Figodf. Figure III is a ltransverse section on line ct-b of Fig. I. Figure IV is.aJ plan ofthe screen-disk and central scouringplate. -Letters of like name and kind refer to likeparts in each ofthe gures. Y Itis well understood that bran-dusting machines have for their object the separation, from'the bran of ground wheat, ofthe fine particles of our which adhere thereto in grinding, and that this object is attained by` forcing the particles of Hour through the -Ineshes of'ascreen or boltlthrough which the bran cannot pass In' some machines the screen or bolt is made in the Aform of a disk,iand\`rotated at a. high velocity, with its` axis verticahits surface running in contact with stationary brushes which `scour the bran and release the our so that it may pass through the meshes of the screen, when aided by n proper air-current, `whiletxhe Bral is discharged by centrifugal action at the periphery of the screen.

It is to this class of machines that my improvements relate; said improvements consisting-e- First, in extending the fan-wings, which produce the air-current through the screen, outwardly and `down-- wardly, beyond the periphery of the screen, to prevent the Hour from dying back against the screen,ior blowing out at the joint between the screen and flour-chamber, and-from packing o r clogging in the flour-chamber.'

Second, in providing a serrated scouringplate at the eye of the screen-disk, in order to the more eifeotually 4 scour the bran where the motionof the disk is slow, and relieve the screen from such labor, so that it may the 'better perform its proper duty of separation.

Third, making the sereenframe in sections, and covering each section separately with screen-cloth,so tha't each BGG-tion may be removed and cleaned `or-repaircd, as occzisioh may require, without the displacement or removal of any other part. l v

Fourth, supporting the brush-tempering frame, at two points, by thc brush-adjustingscrews,and at a third point by a screw-post from the case forming the flourchambc'r. i y

Fifth, supporting the annular case forming the lourehamber by brackets, (projecting from the verticall posts, or main frame of the machine,) and furnished with a double set of adjusting-screws;whereby'said casemay be adjusted laten-.ally and vertically to secure a close-tting joint between thecase and screen-disk.

` Having reference to the accompanying drawings The main frame 'of the inachine consists of two vertical posts or columns, A, connected at the top by the -I bridge-tree B, andconnected and supported at the bottom by the bridge-tree C, having lateral cxtensions,0; at"each end, forming feet, upon which the machinestands, with sufficient spreadtogive it lateral stability.

A vertical shaft, D, located centrally between the columns A, and supported at its lower end by a footstepbel'ng, d', in the lower bridge-tree C, and at its upper'end `by the bridge-tree carries the horizontal scream`- i disks E and E', through which the separation ofthe flour from the bran is effected.

These disks with alltheir attendant parts are duplicates of eiich other, both in construction and operation, and euch possesses all the functions of a complete machine. They yare used in combination, the offal from the upper one feedingthe lower one, thereby securing a more perfect separation ofthe lour and vbran than'could be obtained by one alone. More than two might be employed if necessary.- The description of construction `will be confined to one, although the same letters of reference will be applied to both.

and providedvxvith nuts by which the tempering-wheel may-be raised or lowered.` A third support is a'orded l by a screw-post, from the case Jl, taking hold of a projected ear, p', and nlso provided with adjusting-nuts so that vthe wheel is retained securely in position.

' A spout, Q, leads from the bran-discharge orifice L2, of the upper screen or bolt, tothe eye of the curb of" the lower screen, so `that the bran discharged from the' upper screen is subjected to a second operation, which clan hardly fail to 'remove all remaining particles of flour adheringthereto. The Hour-discharge orifices of 'the upper and lower screens may be brought together`into one spout, or may discharge into two different receptacles.

A 'better grade offlour is of course obtained from `t'hc upper screen-than 'from th'e lower onc', iso` that it is genl rally an object to use -diierent receptacles.

` This machine performs its work in the most perfect and satisfactory manner, giving a' maximum yield of Hour from the bran, and being durable,V light-running, and allits ports easily accessible and readily `adjusted to the grade of work desired to be done.

Having thus described my invention, what Inclaim, and desire to secure` by Letters Patent, isii V.l. The Afan-wings,l4f, revolving within the'cllkamber J5 and extending downwardly and outwardly beyond the.

periphery ofthe screen-disk, as and for the purpose set forth. l V

2. The combination of the serrated scouring-plate, at the eye of 4the screen-disk, with the surrounding scrcencloth, as and for the purpose set forth.

Making the screen-frames in sections, as and for the purpose set forth. v 4. Supporting the brushltempering Wheel at two points by the brush-adjusting scrcws,`and at a. third point by the screw-post from the Hour-chamber', for -tbc purpose described.

5. The brackets K, with their adjusting-screws K1 KZ, for adjusting t-llc tlourlcase lntcrzilly und vertically, as set forth.

p. PETER T. ELTING.` Witnesses: i W. H. FoRBUsH, Enw. WILHELM. 

